What is nsuserdefaults? What type of data can we store there?
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Explain retain counts in iOS operating system?
What manual memory management?
Which is the application thread from where uikit classes should be used?
What does ns stand for ios?
What are the App states in iOS operating system? Explain them
what is protocol? . The use of protocol?
What is the extension of ios files?
Explain me what is "delegate"?
What is swift and what is objective-c?
Which language is used in ios?
Will iphone 6 get ios 13?
Can you pass same core data objects between different threads and modify?